Do I specific need a invite letter if I have a Tier 1 VISA?

Thanks a lot vks.

Do you think I need to book a hotel in london as I have nobody in London to help me out on this.

Hi,

I already have a Tier1 VISA but no job. So I am going to London to search one.
In such case do I need to have a address to stay or a invite letter from someone in UK to show to immigration officers in UK?

Thanks